I suspect this issue is not for the milestone DCAT CR.
The implementation evidence is collected once that we have the Candidate Recommendation.
That is what I have understood following the discussion during last plenary, and in particular,
considering what Philippe Le Hégaret said at 21:22:22 in the [plenary minutes](https://www.w3.org/2019/03/12-dxwg-irc):
>Once you have CR, you have to gather implementation experience. You have three steps, CR, proposal recommendation (at which point we ask members at large to review), and then recommendation.
and also reading the [Candidate rec section](https://www.w3.org/2019/Process-20190301/#candidate-rec) in the W3C consortium Process Document.
**I might be mistaken, but what is necessary at this stage is to document how adequate implementation experience will be demonstrated by indicating the way we want to follow in the section Status of this document.**
For example, in the first candidate REC of the [Data on the Web Best Practices](https://www.w3.org/TR/2016/CR-dwbp-20160830/), the DWBP group wrote:
>The Working Group invites publishers to test whether their datasets pass or fail each of the Best Practices in this document using the DWBP Evidences Form. The information gathered through this means will be augmented by further analysis of data available on the Web and, as noted in the charter, national or sector-specific guidelines that reference the Best Practices. The Working Group expects to adduce the combined set of evidence when requesting that the Director advance this document to Proposed Recommendation.
DWBP developed a dedicate set of forms, but I guess that we might as well prepare a github wiki page where to provide instruction for implementers considering as possible ways one or more among the following possibilities
- to send the link to their implementations to the group
- to compile a wiki page (e.g. https://github.com/w3c/dxwg/wiki/DCAT-implementation-evidence)
- to compile a google form
- ...
The preliminary collection of implementations started by @andrea-perego and @dr-shorthair are in any case useful preparing the CR, they might be precious to identify DCAT features/ terms which might be at risk. In fact, according to the [Candidate rec section](https://www.w3.org/2019/Process-20190301/#candidate-rec), the Working Group to publish a Candidate Recommendation
>MAY identify features in the document as "at risk". These features may be removed before advancement to Proposed Recommendation without a requirement to publish a new Candidate Recommendation.
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